If a Solar window refuses to maximize, it may be hidden off the screen or behind the toolbar. To find the window, right-click on the toolbar icon for the window you’re trying to maximize – select “move” in the menu.
Use the arrow keys (start by holding the up arrow key) to see if the window comes into view. Once you see it, you may have to resize it by grabbing the lower corner and dragging it open.
If none of the arrow keys bring the window into view, you may need to completely un-install and re-install Solar. http://kb.eclipseinc.com/kb/how-do-i-clear-the-java-cache-to-reinstall-solar/
Contact Eclipse Systems if you need assist.